Piston-meter



2 Sheets-Sheet 1. G. HOLLIDAY.

PISTON METER.

(Model.)

Patented NOV. 4, 1884.

2 Sheets-Sheet 5% (Model.)

' e. HOLLIDAY.

vPISTON METER.

No. 307,464. Patented Nov. 4, 1884.

v 5g: SSM

Unirse @rares arrivi* erich.

GAVlN HOLLIDAY, OF SAUGUS, MASSACHUSETTS.

PISTON- METER.

SPECIFICATION forming part of Letters Patent No. 307,464, dated November 4, 1884.

Application tiled October 1l, 1858. (Model.) i

To @ZZ whom t may concern:

Be it knownthat l, GAvIN HOLLIDAY, o Saugus, in the county of Essex and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Vater- Meters, of which the following, taken in connection with the accompanying drawings, is a specification.

My invention is an improvement in watermeters of that class in which the water is passed into a cylinder and caused to give a reciprocating motion to apiston contained there in, which motion may be registered by any suitable device designed for the purpose.

My invention consists in special devices whereby, when the water entering at either end of the cylinder has forced the piston to the opposite end, the said devices will be operated upon, actuating valves of peculiar and novel form, which change the course of the water, admitting it at that end of the cylinder to which the piston has been forced, and at the same time opening suitable ports for the egress of the exhaust-water that has been registered, which gives a reciprocating motion to the piston.

My invention further consists in the novel form and peculiar arrangement of the valves, and also inthe various details of construction, more particularly referred to hereinafter, and specifically claimed.

In the accompanying drawings, Figure l is a perspective view of the device. Fig. 2 is a transverse section through the center of the cylinders and valve-chamber. Fig. 3 represents a plan view of the rear face of the diskvalve. Fig. 4 represents the sliding or piston valve in side elevation. Fig. 5 is a perspective view of the disk-valve and seat, the valve being represented as raised lfrom its seat to better illustrate its form and relative position to its seat. Fig. 6 represents a longitudinal section through the cylinders on line m x of Fig. 2. Fig. 7 shows a section through the sliding valve, valve-chamber, and a portion of the cylinder. y

In these drawings A represents the cylinder; B, the piston contained therein, and c the supply-pipe. The cylinder A is formed with a longitudinal projection, l, to which is Ythe wall of the chamber.

secured, by screws or bolts, the chamber D. (Shown in Fig. l.) In this chamber works a sliding or piston valve, E, after the manner of the ordinary piston. Ports d ande are formed in the projecting portion l of the cylinder, leading from the valve-chamber D, near the center thereof, to the extreme ends of the cylinder A. The sliding valveEisa single casting of peculiar construction, consisting of cylindrical heads a b and a central portion, c, which is partially cylindrical in cross-section, having a hat side, as at 2, and a central depression, as at 3, as shown in Figs. 2 and 6. The heads of the valve are formed to t accurately the bore of the chamber D, and are separated from the central portion, c, by spaces 4 and 5. These spaces 4 and 5 are adaptedin size and position to register with the passages d and e, respectively, not, however, simultaneously. It will be seen from this construction of the valve that when it is in position within the chamber a space, 6, is formed between the heads and side 2 of the valve and The movement of this valve is controlled by a supplemental valve, G, Figs. 2 and 6, which in turn is operated by the piston, as hereinafter described.

Secured in any suitable manner to both the valve-ehamber D and the projection l of the cylinder, is a plate, F, in which is formed a chamber, f, Fig. 2, for adisk-valve, G, and an opening, 7, threaded to receive the supply` pipe G. The opening 7 has free communication with both the valve-chambers D and f, through passages or ports 8 and 9, as shown in Fig. 2, the passage Sopening into the space 6 in the chamber D, Vbefore referred to. Supposing the valve E to be in theposition shown in Fig. G-that is, with the central portion, c, closing the passages d and e-water entering lfrom the supply-pipe will first flow through the passage 8 and fill the space 6, but as the pressure exerted by the water `is equal in all directions, the valve will not be moved from the position shown. rlhe` water una-ble to pass through the chamber will flow through the port 9 and fill the chamber f.

The action of the disk-valve G is now to be explained. It is iiXed to a stem, g,which has a bearing at l0 in the projecting portion 1 of IOO the cylinder. Upon the outer end of the stem is secured fan arm, `,Which is connected by bar 7c to the ends of the levers H l, pivoted fitted to a seat, J, on the projection '1 of the` cylinder, which has passages ap, communicating directly with the extreme ends of the valve-chamber D, and passage o', communieating directly with the discharge-opening L. 'The ports 'up and depression o of the valve are so positioned in relation to the .passages n 2O p o of its seat that when either of the said ports a or p lregisters with its .corresponding passage, .the two remaining passages will be bridged by the depression o, the lother port meanwhile being over the solid portion ofthe seat. As show,n,the discharge-opening L has direct communication with valve-chamber D through the port `t.

The parts areso arranged in relationto each other that the depression 3 of the valve D bridges the ports d and t when the space 5 registers with the passage e, this being done while the disk-valve is in the position shown in `Fig. 5-that is,with the depression O bridging the passages n ando', and the port p registering with .the passage p. The valve being in lthis position, the water, having filled vthe chamber f ,as before described, will flow through the port p and 'passage' p into the right-'hand end of `the chamber D, forcing the valve from ,the position shown in Fig. 6to the left-hand .end .of the chamber, the water orair in that Vend .escaping through the passage a, depression o, and passage o' out through the discharge-opening. This movement 'brings the sliding valve into the position shown in Fig. a direct passage lbeing thereby formed for the admission of the water `to the right-hand end of the cylinder A, through v passage 8, ,space .5, and passage e, and a con-v tinuous channel vbeing also formed for the egress `of the Avexhaust water .or air from the other end of .theeylinder through passage d, depression 3, ,port tand discharge-opening L. The piston, just before reaching the end of its leftward stroke, strikes the end of the pin l, pushing it out, which, through .the lever H,

connecting-bar ,75, and arm t, serves to reverse the position of lthe vdisk-valve, throwing the mechanism into the position shown in Fig. 1,

thus changing the course `of the water and allowing it to flow through the port ,n .and passage nl into the left-hand .end of the .chamber D, ,and providing for the yescape of the eX- haust water contained in the other end through the passage p by bridging the open'- ing of the said passage p and the passage o. rllhis sends the valve E back to the righthand end of its chamber, opening the passage d and e for lthe entrance and. 4egress of the water to and from the cylinder, thus reversing the movement of the piston D, forcing it back to the right-hand end of its cylinder, with the effect already described of reversing the action of ythe entire device, thus giving a positive reciprocating motion to the piston. Suitable packing of rubber may be interposed between the joined portions of the device to make perfectly water-tight joints. The

movement of the sliding valve E is limited 'by a set-screw, 12, the'end of which enters a groove, 13, in the central portion of the valve.

This prevents the passage n and p from being closed by the valve, and also yserves .to keep the .valve in .the position `shown in Fig. 2, so that the water will flow unobstructed into the chamber D.

The bosses on `the ,cylinder-heads, through which the pins Z and m pass, are provided with adjusting-nuts 15 16, by which'the movement of the levers H and I may be regulated to give the proper amountof movement tothe disk-valve.

The registering device may be of any desired form, connected in any suitable way xto the reciprocating .bar 7c, the levers H I, .or any of the moving parts of the device.

I claim as my invention- 1. In a water-meter, a cylinder containing a piston having entrance and exit passages for the water, a sliding valve adapted toopen and close said passage, .a supplemental valve and water-passages adapted to operate .the sliding valve, and suitable devices at the ends of the cylinder, by which Vthe supplemental valve is voperated when the piston reaches either end of the cylinder, substantially as -.described. i

2. ln the described device, the cylinder having entrance `and .exit passages d and e,

and discharge port and openings t and L, the chamber D, and valve E, .consisting of heads f a b, and central portion, c, the central portion having a depression, 3, and cut-away side 2, spaces 4 and 5 between the heads and Ithecentral portion, and .the devices for operating .the said valve, whereby when-the water is admitted to either end of the cylinder the .exit-passage is opened for the `escape of .the exhaust-water from the other end, substantially as described.

3. In .the described device, and in combi-nation with the chamber D and valve E, thesupplemental valve G, for operating the same, consisting of the disk having ports n and p, and

depression `0, the valve-seatJ, having passages a and p 'leading to the .ends of the chamber, and the passage o to the dischargeopening, all substantially as described, and `for ythe purpose set forth.

,4. In the described device, and in combi-nation with the .chamber D and its valve E, the valve-seat J, having passages leading to the roo IIO

ends vof the chamber, asupplemental valve water to one end of the cylinder, and. at the adapted to form a passage for the entrance of Y same Jnime form a discharge-passage for escape of the exhaust-Water from the other end7 substantially as described.

5. In combination with the valve E and suppleinental valve, the means for operating the same, consisting of the arm z', secured to the stem of the valve, connecting-bar k, levers H I, bearing upon the pins Z and m, which slide in the heads of the cylinder when acted upon by the piston, substantially as described.

6. In Combination with the supplemental valve and its operating mechanism, the adjusting-nuts l5 and l6,substantia1]y as described, and for the purpose set forth.

GAvrN HOLLIDAY.

Vitiiesses:

SEYMOUR RUTH, C. B. TUTTLE. 

